EP 1060016 A1 20001220 - SUPPRESSION OF AGING FOR PD-AU VINYL ACETATE MONOMER CATALYST
Title (en)
SUPPRESSION OF AGING FOR PD-AU VINYL ACETATE MONOMER CATALYST
Title (de)
VERHINDERUNG DER ALTERUNG VON PD-AU-VINYL-ACETAT-KATALYSATOREN
Title (fr)
SUPPRESSION DU VIEILLISSEMENT DES CATALYSEURS DE MONOMERE D'ACETATE DE VINYLE PD-AU
Publication
Application
Priority
- US 9902587 W 19990205
- US 7383798 P 19980205
- US 24559999 A 19990205
Abstract (en)
[origin: WO9939824A1] In one embodiment, the present invention relates to a method of making vinyl acetate monomer, involving contacting reactant gases with a catalyst comprising palladium, gold and a support in the presence of clean steam, wherein the clean steam is present from about 2 to about 10 psia, with the proviso that the support does not comprise alumina or zinc oxide. In another embodiment, the present invention relates to a method of regenerating a palladium-gold catalyst having an alumina-silica support during a process for making vinyl acetate monomer, involving contacting vinyl acetate monomer reactant gases including oxygen with the palladium-gold catalyst in the presence of clean steam at a temperature from about 100 DEG C to about 180 DEG C, wherein the clean steam is present from about 1 to about 8 mole percent of a combination of the vinyl acetate monomer reactant gases and clean steam.
IPC 1-7
IPC 8 full level
B01J 23/44 (2006.01); B01J 23/52 (2006.01); C07B 61/00 (2006.01); C07C 67/05 (2006.01); C07C 67/055 (2006.01); C07C 69/15 (2006.01)
CPC (source: EP KR US)
B01J 23/52 (2013.01 - EP KR US); B01J 38/06 (2013.01 - KR); B01J 38/12 (2013.01 - KR); C07C 67/055 (2013.01 - EP KR US); Y02P 20/584 (2015.11 - EP US)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 9939824 A1 19990812; AU 3287099 A 19990823; CN 1292726 A 20010425; EP 1060016 A1 20001220; EP 1060016 A4 20021127; JP 2003535016 A 20031125; KR 20010040654 A 20010515; US 6156927 A 20001205
DOCDB simple family (application)
US 9902587 W 19990205; AU 3287099 A 19990205; CN 99803776 A 19990205; EP 99934230 A 19990205; JP 2000530305 A 19990205; KR 20007008526 A 20000804; US 24559999 A 19990205